PMID- 26394352 OWN - Quintessenz Verlags-GmbH CI - Copyright Quintessenz Verlags-GmbH OCI - Copyright Quintessenz Verlags-GmbH TA - Int J Oral Maxillofac Implants JT - The International Journal of Oral & Maxillofacial Implants IS - 1942-4434 (Electronic) IS - 0882-2786 (Print) IP - 5 VI - 30 PST - ppublish DP - 2015 PG - 1143-1148 LA - en TI - Oral Health-Related Quality of Life in Edentulous Patients with Two- vs Four- Locator-Retained Mandibular Overdentures: A Prospective, Randomized, Crossover Study LID - 10.11607/jomi.3987 [doi] FAU - Karbach, Julia AU - Karbach J FAU - Hartmann, Sinsa AU - Hartmann S FAU - Jahn-Eimermacher, Antje AU - Jahn-Eimermacher A FAU - Wagner, Wilfried AU - Wagner W CN - OT - intraindividual comparison OT - locator-retained overdenture OT - oral health-related quality of life OT - two- versus four-locator AB - Purpose: To compare the oral health-related quality of life (OHRQoL) in a prospective, randomized crossover trial in patients with mandibular overdentures retained with two or four locators. Materials and Methods: In 30 patients with edentulous mandibles, four implants (ICX-plus implants [Medentis Medical]) were placed in the intraforaminal area. Eight weeks after transgingival healing, patients were randomly assigned to have two or four implants incorporated in the prosthesis. After 3 months, the retention concepts were switched. The patients with a two-implant-supported overdenture had four implants incorporated, whereas patients with a four-implant-supported overdenture had two retention locators taken out. After 3 more months, all four implants were retained in the implant-supported overdenture in every patient. To measure OHRQoL of the patients, the Oral Health Impact Profile 14, German version (OHIP-14 G), was used. Results: A considerable increase in OHRQoL could be seen in all patients after the prosthesis was placed on the implants. Also, a statistically significant difference of OHRQoL could be seen in the OHIP-14 G scores between two-implant and four-implant overdentures. Patients had a higher OHRQoL after incorporation of four implants in the overdenture compared with only two implants. Conclusion: Patients with implant-retained overdentures had better OHRQoL compared with those with conventional dentures. The number of incorporated implants in the locator-retained overdenture also influenced the increase in OHRQoL, with four implants having a statistically significant advantage over two implants. AID - 846639